Inputting N number of lines into a buffer

[polo87]

Hello,
I am trying to input 1000 lines from a file at a time into a buffer ,do some processing on it and then refill the buffer ,process again and so on until the full file has been scanned.
Is there an inbuilt function for this or any other way to implement this.

Thanks

[Faldrax]

You will need to code the functionality yourself but it is not hard.
In pseudo code

Create_Buffer
While not end of file
{
Load 1000 lines into Buffer
Process Buffer
}


Where Load 1000 lines into buffer is itself a loop

Lines_read =0;
while ((Lines_read <1000) && (not end of file))
{
Read Line Into buffer
}

[satm2008]

You can use read() for reading multiple lines of buffer. Try it out.

[satm2008]

What I meant to say is that,

create a structure of single line(or array of chars) of a fixed length and use it with fread() like:

fread((struct buffer *) buffer, sizeof(struct buffer), 100, your_file);

where struct buffer has a single char[_MAX_LINE_LENGTH_] declared in.

You can use directory the character array too, in which case you would have to use char * in the fread() function.

Good luck ;)

[Duthomhas]

Keep in mind that if you do a block read as satm2008 suggested, you will have to account for the following two possibilities:

1. The last line may not be completely read into the buffer.

2. Newline sequences may vary among: "\n" (unix), "\r\n" (windows), "\r" (mac).